diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/LICM.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LICM.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Scalar/LICM.cpp b/llvm/lib/Transforms/Scalar/LICM.cpp index 5f00bb94188..c706248267f 100644 --- a/llvm/lib/Transforms/Scalar/LICM.cpp +++ b/llvm/lib/Transforms/Scalar/LICM.cpp @@ -810,6 +810,7 @@ void LICM::PromoteAliasSet(AliasSet &AS, // us to prove better alignment. unsigned Alignment = 1; AAMDNodes AATags; + bool HasDedicatedExits = CurLoop->hasDedicatedExits(); // Check that all of the pointers in the alias set have the same type. We // cannot (yet) promote a memory location that is loaded and stored in @@ -844,6 +845,11 @@ void LICM::PromoteAliasSet(AliasSet &AS, assert(!store->isVolatile() && "AST broken"); if (!store->isSimple()) return; + // Don't sink stores from loops without dedicated block exits. Exits + // containing indirect branches are not transformed by loop simplify, + // make sure we catch that. + if (!HasDedicatedExits) + return; // Note that we only check GuaranteedToExecute inside the store case // so that we do not introduce stores where they did not exist before |
